<template>
    <!-- 头部区域 -->
  <el-container class="home-container">
   <el-header >
    <div>
      <img src="../assets/heima.png" alt="">
      <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button>
  </el-header>
   <!-- 页面主题区域 -->
   <el-container>
    <!--  侧边栏区域-->
    <el-aside :width="isCollapse ? '64px' : '200px'">
      <div class="toggle_button" @click="toggleCollapse">|||</div>
      <!-- 侧边栏菜单区域 -->
      <el-menu
      background-color="#545c64"
      text-color="#fff"
      active-text-color="#359bff"
      unique-opened
      :collapse="isCollapse"
      :collapse-transition="false"
      router
      :default-active="activePath"
      >
      <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
        <template slot="title">
          <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
        <!-- 二级菜单 -->
          <el-menu-item :index="'/'+ subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+ subItem.path)">
            <template slot="title">
          <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template>
          </el-menu-item>
      </el-submenu>

    </el-menu>
    </el-aside>
    <!-- 右侧内容主体 -->
    <el-main>
      <router-view></router-view>
    </el-main>
   </el-container>
</el-container>
</template>

<script>
export default {
  data () {
    return {
      /* 左侧菜单的数据 */
      menuList: [],
      /* 菜单的图标 */
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      /* 是否折叠 */
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = localStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.localStorage.clear()
      this.$router.push('/login')
    },
    /* 获取所有的菜单 */
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menuList = res.data
      console.log(res)
    },
    /* 点击按钮切换折叠和展开 */
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    /* 保存链接的激活状态 */
    saveNavState (activePath) {
      window.localStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.el-header{
  background-color: #373d41;
  display:flex ;
  justify-content: space-between;
  padding-left: 0;
 align-items: center;
 color: #fff;
 font-size: 20px;
 >div{
  display: flex;
  align-items: center;
  span{
    margin-left: 20px;
  }
 }
}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color:#e9edf1;
}
.home-container{
  height: 100vh;
}
.iconfont {
  margin-right: 10px;
}
.toggle_button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.3em;
  cursor :pointer;
}
</style>
